hurley



2 Sheets-Sheet l.

(No Model.)

' T. MURLEY.

SMUKE BURNER.

Patented June 6, 1882..

v 2 Sheets-Shem-I 2.@ T. MURLEY.

SMOKE BURNER.

(No Model.)

Patented June 6, 1882.

UNITED 'STATES' THOMAS MURLEY, OF CHICAGO, ILLINOIS, ASSIGNOR OFONE-HALF TO SENECA D. KIMBARK, OF SAME PLACE.

SMOKE-BURNER.

SPECIFICATION forming part of Letters Patent No. 259,277, dated June 6,1882,

Application filed January 21, 1882. (No model.)

To all whom it muy concern:

Be it known that I, THOMAS MURLEY, a citizen ofthe United States,residing at the city of Chicago, in the State of Illinois, have iuventedcertain new and useful Improvements in Smoke-Burners, ofwhichthetollowingis the specification.

Figure l is afront View of a boiler placedin position with mysmoke-burner attached. Fig. 2 is a longitudinal sectional view through xof Fig. l, showing steam-jet pipes runninginto lire-chamber. Fig. 3 is ahorizontal view of lire-chamber and grates from line y yin Fig. 2. Figs.4, 6, and 7 are views of discharge end of steam-jet pipes in thefire-chamber, as will be explained hereinafter. Fig. 5 is a verticalsectional View of air-drum and steam-pipe therein.

The object of this invention is to provide an apparatus that whenapplied to steam-boilers will aid in the combustion of fuel to the eX-tent of making the combustion as nearly perfect as possible.

Similar'letters of reference refer to similar parts in the differentdrawings.

A is a steam-pipe leading from the boiler or the dome of the boiler andconnects with the steam-pipe B. This steam-pipe B passes in front of theboiler, down each side, and across the bottomjust above the doors C C,which lead into the tire-chamber, thus forming a continui ous pipearound the front of the boiler.

D is a perforated air-drum located around the top part of pipe B, asshown in Fig. l and at Fig. 5. Within this air-drum are additional'steam -pipes, connected at both ends with steain-pipeBfor the purpose ofpresenting more heatingsurface to the heating of air. At end G ofair-drum it is air-tight around pipe B. At the opposite end thisair-drum is connected with a jacketpipe, H, surrounding pipe B. Thisjacket-pipe H is larger in diameter than pipe B, leaving an air-spacebetween the two.

From the lower horizontal stretch of the steam-pipe B there extend threesteamjet pipes, I J I, as shown in Figs. 2 and 3,through the front walland into the upper front'part of the {ire-chamber, each having theirinner end slightly turned downward, as shown at K, Fig. 2. All of thesepipes enter the JEire-chamber parallel to each other. Around each ofthese steam-jet pipes is also a jacket-pipe, L, extending through thefront wall and nearly to the end of the steam -jet pipes. Thesejacket-pipes L are connected to the jacket-pipes Il.

At end K of each of the two steamjet pipes, I I, is a single hole ofabout one-sixteenth of an inch in diameter. At same end of the middlesteam-jet pipe, J, are three holes of the same diameter, arranged in ahorizontal line across the endot' the pipe. The two outer holes rundivergiugly from the line ofthe pipe, while the middle one runs directlywith the line ot' the pipe, as shown in Fig. 6, and at J, Fig. 3.

The jacket-pipe Hextends from theair-drum D around to and a littledistance short of the steamjets I J I.

Live steam from the boiler is admitted into pipe A, which passes intopipe B, in which it circulates both ways, thus making an even pressureon all three, or each of the steam-jets I J I, through which it passesinto the lirechamber. v

Air enters the air-drum D through the various openings or perforationstherein, where it is heated by the steam-pipes in the drum andjacket-pipe as it passes down through the jacket-pipes H and L into thetire-chamber. The4 steam escaping from end K of the steamjet pipes drawsthe air through the jacket-pipes H and L, and at K it is thoroughlymingled with the steam, and the two thus mingled are thrown forward withthe tendency to strike the grate-bars at about their center between thebridge-wall and the front wall of the f1rechamber.

Fuel is fed into the lire-chamber through the doors C C and underthesteam and air-jets O, Fig. 2, and as it is partially consumed andassumes the character of burning coke it is pushed back, in a measure,to make-room for another supply ot' fuel.

The condition of the fuel in the tire-chamber is as follows: The freshfuel is under the steam and air jets, and the lively-burnin g coke isbeyond them, toward the bridge-wall. fuel is fed to the tire, the iirstinterval thereafter is when the nnconsumed carbon escapes and producesblack smoke. Tere there su1licient oxygen present at this interval thenow escaping carbon would be burned, and thus As fresh IOO smokeprevented. As the steam and air jets are thrown obliquely across thepath of the escaping unconsumed carbon the deficiency in oxygen issupplied to it, when complete combustion instantly follows in itspassage over theburning coke beyond the air and steam jets. By thediverging course of the lateral jets in central steam-jet, J, steamcomes in contact With jets from side pipes, I I, and thus a canopy isformed over the re beneath it. Hence the intermingling of the steam,air, and escaping carbon is perfect and the lameis short,chopped, andshattered, and in color` is white, showing the combustion so nearlyperfect as to destroy all black smoke.

The downward course of the steam and air jets 0 obviate all danger ofburning the boiler. In the drawings only three steam and airjets areshown. Ordinarily this numberwould do; butshould more be required, as ina large boiler, the number could be increased without departing from myinvention. In the lateral steam-jet pipes I I but one hole is mentionedand shown. Should itbe desired, more could be too much capacity for theescape of steam into the re-chamber, as it would impede the working ofthe burner.

I am aware that air has been introduced into the fire-chamber inconnection with steam for the purpose of facilitating combustion, butthe means and arrangement herein used are believed to be new. f

I claim- In combination with a stean1-boiler and its fire-chamber, thesteam-pipes A and B, jacketpipes H and L, and perforated drum D, alllocated outside of boiler, and steam-pipes I J I, the side pipes, I I,having one or more direct holes in each end K, and the central pipe, J,having one or more direct central holes and two diverging holes in endK, substantially as shown, and for the purpose described.

THOMAS MURLEY.

Vituesses:

Jas. A. CoWLEs, H. R. PEBBLEs.

